US4035571A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fire retardant copolymers
Assignee: Stauffer Chemical Co
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Filing: 1975-09-24
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Granted: 1977-07-12
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Expires: 1995-09-24
Abstract
Abstract Fire retardant copolymers of: (1) a bis (hydrocarbyl) vinylphosphonate, (2) a monomer which contains one ethylenically unsaturated bond, and (3) acrylic or methacrylic acid are disclosed. These copolymers are useful in a variety of applications, including as coatings, and as additives for enhancing the fire retardancy of thermoplastics.
Inventors
- 👤 Robert H. Brunner
- 👤 Paul Kraft
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 01:45
CPC Classifications
C; C08; C08F; C08F246/00; C08F230/00; C08F230/02; C09; C09D; C09D5/00; C09D5/18; Y; Y10; Y10S; Y10S260/00; Y10S260/24; Y10S428/00; Y10S428/92; Y10S428/921; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31855; Y10T428/31935
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
170 words
A fire retardant, solid copolymer consisting of: (1) about 5% to 85% by weight of a bis(hydrocarbyl) vinylphosphonate having the formula: ##STR3## wherein X is selected from the group consisting of hydrogen, halogen, cyano, aryl, C 1 -C 18 alkyl, alkenyl, cycloalkyl, cycloalkenyl, and ##STR4## wherein R and R' are hydrocarbyl and hydrocarbyl groups with substituents which do not interfere with the polymerization of said vinylphosphonate, said hydrocarbyl groups and substituted hydrocarbyl groups either consisting of or consisting essentially of hydrogen and carbon and containing up to about 18 carbon atoms inclusive with the proviso that R and R' may be the same, different or conjoint; (2) about 10% to 85% by weight of a monomer selected from the group consisting of vinyl aryl compounds, and C 1 -20 alkyl esters of acrylic and methacrylic acid, said monomer containing one ethylenically unsaturated bond and being copolymerizable with the vinylphosphonate; and (3) about 2% to 50% by weight of a monomer selected from the group consisting of acrylic and methacrylic acid.
Claim 2
Dependent Claim
170 words
A fire retardant, solid copolymer consisting of: (1) about 5% to 85% by weight of a bis(hydrocarbyl) vinylphosphonate having the formula: ##STR3## wherein X is selected from the group consisting of hydrogen, halogen, cyano, aryl, C 1 -C 18 alkyl, alkenyl, cycloalkyl, cycloalkenyl, and ##STR4## wherein R and R' are hydrocarbyl and hydrocarbyl groups with substituents which do not interfere with the polymerization of said vinylphosphonate, said hydrocarbyl groups and substituted hydrocarbyl groups either consisting of or consisting essentially of hydrogen and carbon and containing up to about 18 carbon atoms inclusive with the proviso that R and R' may be the same, different or conjoint; (2) about 10% to 85% by weight of a monomer selected from the group consisting of vinyl aryl compounds, and C 1 -20 alkyl esters of acrylic and methacrylic acid, said monomer containing one ethylenically unsaturated bond and being copolymerizable with the vinylphosphonate; and (3) about 2% to 50% by weight of a monomer selected from the group consisting of acrylic and methacrylic acid.
Claim 3
Dependent Claim
16 words
A copolymer as claimed in claim 1 comprising from about 20-75% by weight of the vinylphosphonate.
Claim 4
Dependent Claim
16 words
A copolymer as claimed in claim 1 comprising from about 35-50% by weight of the vinylphosphonate.
Claim 5
Dependent Claim
18 words
A copolymer as claimed in claim 1 comprising from about 20-60% by weight of the ethylenically unsaturated compound.
Claim 6
Dependent Claim
18 words
A copolymer as claimed in claim 1 comprising from about 35-50% by weight of the ethylenically unsaturated compound.
Claim 7
Dependent Claim
17 words
A copolymer as claimed in claim 1 comprising from about 5-40% by weight acrylic or methacrylic acid.
Claim 8
Dependent Claim
18 words
A copolymer as claimed in claim 1 comprising from about 5-20% by weight of acrylic or methacrylic acid.
Claim 9
Dependent Claim
14 words
A copolymer as claimed in claim 1 wherein the vinylphosphonate is bis (beta-chloroethyl) vinylphosphonate.
Claim 10
Dependent Claim
15 words
A copolymer as claimed in claim 1 wherein the ethylenically unsaturated monomer is methyl methacrylate.
Claim 11
Dependent Claim
34 words
A copolymer as claimed in claim 1 comprising about 35-50% by weight of vinylphosphonate, about 35-50% by weight of the ethylenically unsaturated monomer, and from about 5-20% by weight of acrylic or methacrylic acid.
Claim 12
Dependent Claim
25 words
A copolymer as claimed in claim 10 wherein the ethylenically unsaturated monomer is a C 1 -C 20 alkyl ester of acrylic or methacrylic acid.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1980-07-11 | 1981-01-10 | 1981-07-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-07-11 | 1985-01-10 | 1985-07-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-07-11 | 1989-01-10 | 1989-07-12 | $7700.00 | Window Closed / Lapsed |